CN206896396U - Vertebral plate bracing means - Google Patents
Vertebral plate bracing means Download PDFInfo
- Publication number
- CN206896396U CN206896396U CN201720058738.2U CN201720058738U CN206896396U CN 206896396 U CN206896396 U CN 206896396U CN 201720058738 U CN201720058738 U CN 201720058738U CN 206896396 U CN206896396 U CN 206896396U
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- arm
- screw
- nut
- jackscrew
- coupling nut
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Abstract
The utility model discloses a kind of vertebral plate bracing means, for coordinating the use of axis arch screw or Cervical vertebra lateral mass screw, includes, coupling nut, with reference to screw basement, to there is vertical rod between the coupling nut and the screw basement；Jackscrew part, it is in the top of the coupling nut, and mutually activity is set the jackscrew part with the coupling nut；Universal arm, it has arm close end, arm distal portion and arm connecting portion, has long waist shaped hole on the arm close end, and the long waist shaped hole has two arm lock holes to be set in a manner of being surrounded on the outside of the jackscrew bar portion in the arm distal portion；And arm locking nail, it coordinates the arm lock hole, the Universal arm is fixedly connected with cervical vertebra plate.The utility model has the advantage of：Four parts and dentata (or Cervical vertebra) pedicle screw (or lateral mass screw) screw couples more than so that dentata (or Cervical vertebra) pedicle screw (or lateral mass screw) has stronger withdrawal force.
Description
Technical field
The present invention relates to fixation in spinal surgery, more particularly to a kind of vertebral plate bracing means, for coordinating axis arch spiral shell
The use of nail or Cervical vertebra lateral mass screw.
Background technology
Cervical vertebra one shares 7 sections, and atlas is called atlas, and axis is called dentata, and C7 is called vertebrae prominens.The
First, two cervical vertebras are collectively referred to as upper cervical spine, and the 3rd is collectively referred to as Cervical vertebra to C7.Posterior cervical nail rod Internal fixation technology can be in art
In resetted by apparatus and realize that atlas and axis resets, and follow closely rod and fix there is good biomechanical stability, thus outside backbone
It is widely used in section's operation.Apparatus mentioned above resets, and refers to atlas and axis partial reset after preoperative traction, but fails completely
Reset, using dentata screw and longitudinally connected rod as the strong point in art, lifting atlas screw is completed to reset and fixed.At present both at home and abroad
The apparatus that document refers to, which resets, has lifting pincers lifting to reset, T (L) type handle sticks up group reset, U-shaped rod coordinates steel wire lifting to reset,
Long-armed nail lifting reset of atlas etc., a variety of resetting techniques of the above, it is all based on being used as branch using dentata screw+vertical this complex of rod
Support point, atlas is resetted.However, being connected by axis arch root screw this point with vertical rod, foot can not be provided sometimes
Enough strong mechanical stabilities, occur dentata screw and the swing of vertical rod and shakiness during atlas is lifted, so as to reduce device
The efficiency and success rate that tool resets.There is scholar to propose fixed-segment extending to C3 to improve reset and fixed mechanics stabilization
Property, but this will lose the mobility in the gap of neck 2/3.
The content of the invention
Dentata screw pull-out strength deficiency when being resetted it is an object of the invention to overcome in existing atlas and axis nail-stick system art
Problem；Cervical vertebra screw pull-out strength caused by can also be used for overcoming osteoporosis or putting nail failure first decline problem (including dentata,
Cervical vertebra).A kind of vertebral plate bracing means of new dentata (or Cervical vertebra) pedicle screw (or lateral mass screw) is provided.
The technical scheme is that：A kind of vertebral plate bracing means, for coordinating axis arch screw or Cervical vertebra lateral mass
The use of screw, includes,
Coupling nut, with reference to screw basement, to there is vertical rod, the connection between the coupling nut and the screw basement
Nut has nut top and nut bottom；
Jackscrew part, it is in the top of the coupling nut, and the jackscrew part has jackscrew head and jackscrew bar portion,
Mutually activity is set the jackscrew part with the coupling nut；
Universal arm, its have corresponding to the jackscrew part arm close end, corresponding to cervical vertebra plate arm distal portion and
The arm connecting portion of the arm close end and the arm distal portion is connected, there is long waist shaped hole, the long waist on the arm close end
Shape hole to be set in a manner of being surrounded on the outside of the jackscrew bar portion and between the jackscrew head and the nut top, by
By the hole shape of the Universal arm long lumbar hole, the length that the Universal arm stretches to vertebral plate can adjust.
There are two arm lock holes in the arm distal portion, and be distributed in the opposite sides of the arm connecting portion；And
Arm locking nail, it coordinates the arm lock hole, the Universal arm is fixedly connected with cervical vertebra plate.
As a kind of preferred scheme of vertebral plate bracing means, there is nut top connecting hole on the nut top, it is described
There is nut upper internal threaded in the connecting hole of nut top, there is jackscrew bar portion external screw thread, the jackscrew in the jackscrew bar portion
Bar portion corresponds to nut top connecting hole, by matching somebody with somebody for the jackscrew bar portion external screw thread and the nut upper internal threaded
Close, to realize that mutually activity is set the jackscrew part with the coupling nut.
As a kind of preferred scheme of vertebral plate bracing means, the arm close end is spherical design, can be in the connection spiral shell
Female forward direction any direction with the jackscrew part locking rotates.
As a kind of preferred scheme of vertebral plate bracing means, the line of described two arm lock holes and the arm connecting portion
Angulation is close to 90 degree.
As a kind of preferred scheme of vertebral plate bracing means, the arm lock hole uses conical design, the arm lock hole
Interior to have lock hole internal thread, the arm locking nail has locking nail head and locking nail bar portion, and the locking nail head is ball
Shape structure, utilize the spherical design of the locking nail head and the conical design of the Universal arm lock hole, it is possible to achieve described
Locking nail head does the rotation of any direction centered on the normal of the arm lock hole within 15 degree.
As a kind of preferred scheme of vertebral plate bracing means, the arm close end, the arm connecting portion and arm distal end
Portion three collectively forms the length of " Z " font or class " Z " character form structure, the length direction of the arm close end and the arm connecting portion
It is fore-and-aft direction to spend direction, and the length direction of the arm distal portion is left and right directions.
As a kind of preferred scheme of vertebral plate bracing means, the arm distal portion is in the overall arc notch board being recessed upwards,
Preferably to contact cervical vertebra plate.
As a kind of preferred scheme of vertebral plate bracing means, there is nut lower external thread on the nut bottom, and institute
Stating has pedestal connecting hole on screw basement, have pedestal internal thread in the pedestal connecting hole, by the pedestal internal thread
With the cooperation of the nut lower external thread, mutually activity is set the coupling nut with the screw basement, described by tightening
Coupling nut, the vertical rod and the screw basement can be locked.
When being performed the operation applied to atlas and axis：When atlas and axis screw-rod resets, the present invention has dentata screw and vertical rod
Stronger " overarm arm " effect；The problem of reseting procedure maincenter vertebral screw loosens, deviate from is overcome, is overcome as " overarm arm "
Vertical rod the problem of being rocked in reseting procedure, be unstable.Complete after fixing, confirmed through biomechanical test, the present invention makes extensive region pivot
Vertebra nail-stick system has stronger biomechanical stability.When being performed the operation applied to Cervical vertebra：Instant invention overcomes lateral mass screw (or
Pedicle screw) put for the first time nail failure after, or caused by during osteoporosis screw pull-out strength decline the problem of；Through biomethanics
Experiment confirms that invention increases the biomechanical stability of nail-stick system.
Brief description of the drawings
Fig. 1 is the structural representation of one embodiment of the invention.
Fig. 2 is the structural representation (omission Universal arm) of one embodiment of the invention.
Fig. 3 is the structural front view of Universal arm in one embodiment of the invention.
Fig. 4 is the structural side view of Universal arm in one embodiment of the invention.
Fig. 5 uses schematic diagram for one embodiment of the invention.
Embodiment
The present invention is described in further detail below by specific embodiment combination accompanying drawing.
Fig. 1 and 2 is referred to, shown in figure is that the vertebral plate of dentata (or Cervical vertebra) pedicle screw (or lateral mass screw) adds
It is fixedly mounted with and puts.The vertebral plate bracing means is used for spinal surgery, is a kind of atlas and axis screw-rod reduction fixation device.
The vertebral plate bracing means is mainly made up of parts such as coupling nut 1, jackscrew part 2, Universal arm 3 and arm locking nails 5.
The coupling nut 1 is coordinating the screw base of the dentata (or Cervical vertebra) pedicle screw (or lateral mass screw)
Seat 4.Have between the screw basement 4 of the coupling nut 1 and the dentata (or Cervical vertebra) pedicle screw (or lateral mass screw) vertical
Rod.Specifically, the coupling nut 1 has nut top 11 and in the nut bottom 12 of the lower section of nut top 11.
There is nut top connecting hole on the nut top 11.There is nut upper internal threaded in the connecting hole of the nut top.Institute
Stating has nut lower external thread on nut bottom 12.
There is pedestal connecting hole on the screw basement 4 of dentata (or Cervical vertebra) pedicle screw (or lateral mass screw).
There is pedestal internal thread in the pedestal connecting hole.By the cooperation of the pedestal internal thread and the nut lower external thread,
The coupling nut 1 is set with the phase activity of screw basement 4., can be by the vertical rod and institute by tightening the coupling nut 1
State dentata (or Cervical vertebra) pedicle screw (or lateral mass screw) locking.
You need to add is that the screw basement 4 of dentata (or Cervical vertebra) pedicle screw (or lateral mass screw) has
Bottom wall 41 and the first side wall 41 upwardly extended from the top surface beginning of the bottom wall 41 and second sidewall 42.The first side wall 41 with
The second sidewall 42 is arranged at intervals.The first side wall 41, the second sidewall 42 and the three of bottom wall 41 collectively form
"U" shaped structure.The first side wall 41 and the second sidewall 42 define the pedestal connecting hole jointly, and described first
There is the pedestal internal thread in side wall 41 and the second sidewall 42.In the present embodiment, the bottom wall 41 is circular configuration.Institute
The first side wall 41 is stated to be in the left side edge of the bottom wall 41 and extend into arc wall body along the left side edge of the bottom wall 41,
And the second sidewall 42 is in the right side edge of the bottom wall 41 and extends camber along the right side edge of the bottom wall 41
Wall body.The first side wall 41 is relative in left and right with the second sidewall 42.
The jackscrew part 2 is in the top of the coupling nut 1.The jackscrew part 2 has jackscrew head 21 and place
Jackscrew bar portion 22 in the lower section of jackscrew head 21.There is jackscrew bar portion external screw thread in the jackscrew bar portion 22.The jackscrew
Bar portion 22 corresponds to nut top connecting hole.By matching somebody with somebody for the jackscrew bar portion external screw thread and the nut upper internal threaded
Close, the jackscrew part 2 is set with the phase activity of coupling nut 1.
Fig. 3 and 4 are referred to again, and the Universal arm 3 has arm close end 31, arm distal portion 32 and the connection arm close end
31 with the arm connecting portion 33 of the arm distal portion 32.The arm close end 31 is in the top of the arm distal portion 32 so that institute
State arm close end 31, the arm connecting portion 33 and the three of arm distal portion 32 and collectively form " Z " font or class " Z " font knot
Structure.
The arm close end 31 is spherical design, i.e. it can be seen that substantially recessed in the overall arc being recessed upwards
Plate.There is long waist shaped hole 310 on the arm close end 31.The long waist shaped hole 310 is to be surrounded on the outer of the jackscrew bar portion 22
The mode of side sets and between the jackscrew head 21 and the nut top 11.When the coupling nut 1 and the jackscrew
Before part 2 locks, the Universal arm 3 can do the rotary motion of any direction.Simultaneously as the length in the long waist shaped hole 310
Shape designs, and can adjust the Universal arm 3 by changing the cooperation position in the long waist shaped hole 310 and the jackscrew bar portion 22 and stretch
To the length of cervical vertebra plate, by this realize the arm distal portion 32 with it is any in the form of the cervical vertebra plate of size can obtain well
Contact.And after the coupling nut 1 and the jackscrew part 2 lock, the Universal arm 3 is then fixed from rotation fortune
It is dynamic.
The arm distal portion 32, it can be seen that substantially in the overall arc notch board being recessed upwards.The arm distal end
There are two arm lock holes 320 in portion 32, be distributed in the left and right sides of the arm connecting portion 33.The arm lock hole 320 uses
Conical design.There is lock hole internal thread in the arm lock hole 320.In the present embodiment, the line of two arm lock holes 320 with
The angulation of the arm connecting portion 33 is close to 90 degree.Confirmed through biomechanical test, can reach and posterior cervical nail-stick system is reached
Maximum reinforcement effect.
The application method of the Universal arm 3 is relatively simple, and the arm close end 31 first is positioned over into the coupling nut 1
On, the jackscrew part 2 is screwed into, wouldn't be locked.Then, the direction and position of the Universal arm 3 are adjusted, makes the arm distal portion
32 lock hole contacts well with cervical vertebra plate.Finally, the jackscrew part 2 is locked.
The arm locking nail 5 coordinates the arm lock hole 320, and the Universal arm 3 is fixedly connected with cervical vertebra plate.Institute
Stating arm locking nail 5 has locking nail head and locking nail bar portion, and the locking nail head is spherical design, i.e. chondritic.Profit
With the spherical design of the locking nail head and the conical design of the lock hole of the Universal arm 3, it is possible to achieve the locking ailhead
The rotation of any direction is done within 15 degree centered on the normal of the arm lock hole 320 in portion.The arm locking nail 5 can be
The specification of different length, length is optional, therefore can realize that entering for any position follows closely and locked.
Fig. 5 is finally referred to, the operation principle of the vertebral plate bracing means is as follows：According to dislocation of atlas degree, institute is first adjusted
State distance between vertical rod and atlas screw, lock the dentata (or Cervical vertebra) pedicle screw (or lateral mass screw) afterwards, will described in
Universal arm 3 steadily is fixed on lamina of axis.Now, Universal arm 3, the dentata (or Cervical vertebra) pedicle screw (or lateral mass
Screw) and one stable overarm arm configuration of the vertical bar construction, when being lifted using lifting pincers to atlas, reduce
Swing and shakiness of dentata (or Cervical vertebra) pedicle screw (or lateral mass screw) with the vertical rod, add in art and reset
Efficiency and success rate.
When being performed the operation applied to atlas and axis：When atlas and axis screw-rod resets, the present invention has dentata screw and vertical rod
Stronger " overarm arm " effect；The problem of reseting procedure maincenter vertebral screw loosens, deviate from is overcome, is overcome as " overarm arm "
Vertical rod the problem of being rocked in reseting procedure, be unstable.Complete after fixing, confirmed through biomechanical test, the present invention makes extensive region pivot
Vertebra nail-stick system has stronger biomechanical stability.When being performed the operation applied to Cervical vertebra：Instant invention overcomes lateral mass screw (or
Pedicle screw) put for the first time nail failure after, or caused by during osteoporosis screw pull-out strength decline the problem of；Through biomethanics
Experiment confirms that invention increases the biomechanical stability of nail-stick system.
Embodiments of the present invention are only expressed above, and its description is more specific and detailed, but can not therefore understand
For the limitation to patent of invention scope.It should be pointed out that for the person of ordinary skill of the art, this hair is not being departed from
On the premise of bright design, various modifications and improvements can be made, these belong to protection scope of the present invention.Therefore, this hair
The protection domain of bright patent should be determined by the appended claims.
Claims (8)
- A kind of 1. vertebral plate bracing means, for coordinating the use of axis arch screw or Cervical vertebra lateral mass screw, it is characterised in that Include,Coupling nut, with reference to screw basement, to there is vertical rod, the coupling nut between the coupling nut and the screw basement With nut top and nut bottom；Jackscrew part, it is in the top of the coupling nut, and the jackscrew part has jackscrew head and jackscrew bar portion, described Mutually activity is set jackscrew part with the coupling nut；Universal arm, it has the arm close end corresponding to the jackscrew part, corresponding to the arm distal portion of cervical vertebra plate and connection The arm connecting portion of the arm close end and the arm distal portion, there is long waist shaped hole, the long waist shaped hole on the arm close end To set and be between the jackscrew head and the nut top, the arm in a manner of being surrounded on the outside of the jackscrew bar portion There are two arm lock holes in distal portion, and be distributed in the opposite sides of the arm connecting portion, wherein, described two arm lock holes Line and the arm connecting portion angulation close to 90 degree；AndArm locking nail, it coordinates the arm lock hole, the Universal arm is fixedly connected with cervical vertebra plate.
- 2. a kind of vertebral plate bracing means according to claim 1, it is characterised in that have on the nut top on nut Portion's connecting hole, nut top connecting hole is interior to have nut upper internal threaded, has in the jackscrew bar portion outside jackscrew bar portion Screw thread, the jackscrew bar portion correspond to nut top connecting hole, by the jackscrew bar portion external screw thread and the nut The cooperation of portion's internal thread, to realize that mutually activity is set the jackscrew part with the coupling nut.
- 3. a kind of vertebral plate bracing means according to claim 1 or 2, it is characterised in that the arm close end sets for sphere Meter, can rotate in the coupling nut and the forward direction any direction of the jackscrew part locking.
- 4. a kind of vertebral plate bracing means according to claim 1, it is characterised in that by the hole of the Universal arm long lumbar hole Shape, it can adjust the length that the Universal arm stretches to vertebral plate.
- 5. a kind of vertebral plate bracing means according to claim 1, it is characterised in that the arm lock hole is set using taper Meter, the arm lock hole is interior to have lock hole internal thread, and the arm locking nail has locking nail head and locking nail bar portion, described Locking nail head is chondritic, is set using the taper of the spherical design and the Universal arm lock hole of the locking nail head Meter, it is possible to achieve the locking nail head does the rotation of any direction centered on the normal of the arm lock hole within 15 degree Turn.
- 6. a kind of vertebral plate bracing means according to claim 1, it is characterised in that the arm close end, arm connection Portion and the arm distal portion three collectively form " Z " font or class " Z " character form structure, the length direction of the arm close end and institute The length direction for stating arm connecting portion is fore-and-aft direction, and the length direction of the arm distal portion is left and right directions.
- 7. a kind of vertebral plate bracing means according to claim 6, it is characterised in that the arm distal portion is in overall concave up Sunken arc notch board, preferably to contact cervical vertebra plate.
- 8. a kind of vertebral plate bracing means according to claim 1, it is characterised in that have on the nut bottom under nut Portion's external screw thread, and there is pedestal connecting hole on the screw basement, there is pedestal internal thread in the pedestal connecting hole, by institute The cooperation of pedestal internal thread and the nut lower external thread is stated, mutually activity is set the coupling nut with the screw basement, By tightening the coupling nut, the vertical rod and the screw basement can be locked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720058738.2U CN206896396U (en) | 2017-01-17 | 2017-01-17 | Vertebral plate bracing means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720058738.2U CN206896396U (en) | 2017-01-17 | 2017-01-17 | Vertebral plate bracing means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206896396U true CN206896396U (en) | 2018-01-19 |
Family
ID=61295085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720058738.2U Expired - Fee Related CN206896396U (en) | 2017-01-17 | 2017-01-17 | Vertebral plate bracing means |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206896396U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109567918A (en) * | 2018-11-27 | 2019-04-05 | 中南大学湘雅医院 | Medical titanium alloy conical plate positioning system |
-
2017
- 2017-01-17 CN CN201720058738.2U patent/CN206896396U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109567918A (en) * | 2018-11-27 | 2019-04-05 | 中南大学湘雅医院 | Medical titanium alloy conical plate positioning system |
| CN109567918B (en) * | 2018-11-27 | 2020-07-17 | 中南大学湘雅医院 | Medical titanium alloy conical plate positioning system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180119 Termination date: 20210117 |